com.gnss.common.service.BaseMessageService Maven / Gradle / Ivy
package com.gnss.common.service;
import com.gnss.common.exception.ApplicationException;
import com.gnss.common.model.BaseMessage;
import com.gnss.common.proto.TerminalProto;
import com.gnss.common.utils.SessionUtil;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import lombok.Getter;
import lombok.Setter;
/**
* Description: 消息处理器
* Company: www.gps-pro.cn
*
* @author huangguangbin
* @version 1.0.1
* @date 2017/9/15
*/
@Getter
@Setter
public abstract class BaseMessageService {
private int messageId;
private String strMessageId;
private String desc;
/**
* 获取终端信息
*
* @param ctx ChannelHandlerContext
* @return 终端信息
*/
public TerminalProto getTerminalInfo(ChannelHandlerContext ctx) {
return SessionUtil.getTerminalInfo(ctx.channel());
}
/**
* 检查消息体长度
*
* @param msg 消息
* @param msgBodyLen 消息体长度
* @throws ApplicationException 应用异常
*/
public void checkMessageBodyLen(T msg, int msgBodyLen) throws ApplicationException {
byte[] msgBody = msg.getMsgBodyArr();
if (msgBody.length < msgBodyLen) {
throw new ApplicationException("消息体长度不对,不能小于" + msgBodyLen);
}
}
/**
* 处理消息
*
* @param ctx ChannelHandlerContext
* @param msg 消息
* @param msgBodyBuf 消息体
* @return 返回结果
* @throws Exception 异常
*/
public abstract Object process(ChannelHandlerContext ctx, T msg, ByteBuf msgBodyBuf) throws Exception;
}